60PC4R-TB (CHASSIS:PP7AB) - LG TV Service Manual (repair manual). Page 21

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BLOCK DIAGRAM
Wired IR
RGB_PC
RGB_DTV 
PC_Audio
TV
(RF)
COMP 1,2
AV1,
MONITOR OUT
Variable
Audio_out 
HDMI1/2
(PC/DTV) 
RS232
PP7AA
 Block Diagram
HDMI_IIS  
Variable_audio_out L/R
 : 
500mVrms 
 
TX
ST3232
C
Tx/Rx :  
±
15Vpp 
74HC14
DSUB_SCL / DSBU_SDA
DS_VS / DS_HS
PC_Audio_L/R :
 
700mVrms 
PC_Audio_L/R
TU_MAIN
 : 
1Vpp 
S I F AM_Audio 
AM_Audio / S I F
AV1_SW/S1_SW 
COMP1,2_RIN/LIN 
TV_L/R OUT : 
500mVrms
 
VIN2 :
 
1/0.285Vpp
 
LIN2/RIN2:
500mVrms
AV_LOUT/ROUT
SUB_V  OUT  :
 
2Vpp 
MAIN_V or Y/C OUT :
 
2Vpp
  
OUTPUT
51P_LVDS
HY5DU561622ETP-4
DDRRAM(256MB X2)
MX29LV320CTTC-70G
F-ROM(4MB)
L_CH 
R_CH 
L_SPK_OUT 
R_SPK_OUT
24C02
 I2C
Variable_audio_out L/R 
SCART2_ID 
Comp_SW  
Comp_L/R :
 
500mVrms 
 
TUNER
VIN1/YIN1/CIN1
 : 
1/0.285Vpp
 
Audio S/W
 & CONTROL
MSP4450K
Comp_SW  
SCART1_FB 
SCART1_ID  
LIN1/RIN1 :
 
500mVrms  
 
AV2_SW
PWM
NTP3000H
 I2 C
 I2 C
 I2C
 I2C
AV SWITCH
CXA2040
MNT_OUT 
MNT_LOUT/ROUT
 I2 C
AV2
(Side AV) 
MAIN SCALER 
FLI8668
TXD /RXD : 
5V Digital
 
VGA_RGB
 : 
0.7Vpp
 
COMP_Y/Pb/Pr
 : 
1/0.7Vpp
  
AIP_RAW_VS / AIP_RAW_HS_CS : 
5V High/Low
 
SCART1_RGB
 : 
0.7Vpp
 
IR
CN_IIS 
MC_IIS 
HDMI_DATA :
 
3.3V
   
HDMI_CLK/DE : 
3.3V  
HDMI_IIS : 
3.3V
   
HDMI_VS/HS : 
3.3V 
SCL/SDA 
24C02
HDMI Rx
ANX9021
Tx even 0/1/2/3/4/C
      odd  0/1/2/3/4/C
         DISP_EN
SCL/SDA_Part
+
+
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